In the event of discovering a floorboard with some sign of woodworm - possibly in the distant past - if it is seriously affected, then the board needs replacing.
If, however, the floorboard is still structurally sound, I take it that one just uses some Rentokil treatment from one's local hardware shop, and there is no need to call in a specialist?
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If there is no Frass (dust) then it is extinct and your worries are over. We do this for a living btw.
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Permethrin is the stuff tyro, I've even seen it in B&Q.
Boron based treatment is safer to use I believe.
Woodworm (not actually a worm) is always far worse than it looks so spray the critters & forget it.
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Thanks very much, gentlemen.
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You need to keep an eye open elsewhere however. The holes are exit holes, meaning the culprit has already bored its way out and flown somewhere else. They may return to the original area to lay their eggs, but may equally find another crevise somewhere else in the house.
You need to be aware of what the beetles look like, and be vigilant for them in spring or early summer on ceilings or window panes. You can crush them with your finger nail, which is quite satisfying in itself, but their existence shows that woodworm are still active somewhere.
The holes you find easily will not be the only ones.
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woodworm - MD
